Investigation of axial ordering in doped liquid crystals by second harmonic generations

Abstract

The effect of axial ordering in determining macroscopic second order nonlinear optical response in a doped liquid crystal is investigated by the second harmonic generation measurement. Maier-Saupe mean field theory was employed to estimate the axial ordering contributions. The magnitude of second harmonic generations as a function of a dc external field suggests that the effect of axial ordering is negligible while polar ordering is dominant.